Ikan koi Cyprinus rubrofuscus merupakan spesies ikan hias air tawar yang telah dibudidayakan dan terdomestikasi dengan baik di dunia. Ikan koi telah menjadi komoditas budidaya yang bernilai ekonomis tinggi di pasar internasional dan domestik. Penelitian ini bertujuan untuk mengetahui proses pembenihan ikan koi yang dikembangbiakan secara alami. Studi pembenihan ikan koi dilakukan selama 3 bulan di Mina Karya Koi, Sleman Yogyakarta. Calon induk ikan koi dipelihara di dalam wadah berupa bak-bak beton selanjutnya diseleksi berdasarkan standar calon induk yang diinginkan. Derajat pembuahan telur (FR) yang dihasilkan selama kegiatan sebesar 70% dengan tingkat penetasan telur (HR) sebesar 82,3%. Dalam satu siklus kegiatan pembenihan, dihasilkan benih ikan koi sebanyak 105,000 ekor tahun-1 dan R/C rasio sebesar 2,1. Cyprinus rubrofuscus is a freshwater ornamental fish species that has been cultivated and well-domesticated in the world. Koi fish has been a sought-after aquaculture commodity in the International dan domestic market. The present study aimed to investigate the series of koi fish hatchery processes that are bred naturally. Koi fish hatchery study was conducted for 3 months in Mina Karya Koi, Sleman Yogyakarta. The broodstocks were firstly selected based on broodstock quality standards and reared at concretes tank. The fertilization rate (FR) of koi was at 70% with an egg hatching rate (HR) of 82.3%. In one cycle of breeding, koi fish can produce about 105,000 years-1 and an R/C ratio of 2.1.
Ikan nila hitam Oreochromis niloticus merupakan salah satu jenis ikan konsumsi air tawar unggulan yang diproduksi secara intensif di seluruh dunia. Produksi ikan nila terus ditingkatkan dalam upaya peningkatan pemenuhan kebutuhan persediaan pangan nasional, sumber protein dan pendapatan negara. Upaya dalam mencapai target capaian produksi memerlukan metode, teknik untuk pemeliharaan yang efisien, efektif sehingga dapat meningkatkan kualitas dan produksi ikan. Kegiatan pembesaran meliputi persiapan wadah, penebaran benih, pemeliharaan benih, dan pemanenan. Hasil produksi kegiatan pembesaran ikan nila dihasilkan survival rate (SR) sebesar 50-80%, feed conversion ratio (FCR) sebesar 1,38-1,42, dan hasil produksi mencapai 611.362,5 kg tahun-1 dengan ukuran ikan sebesar 232,9 g ekor-1 serta harga jual sebesar Rp31.000,00 kg-1.
Ikan Nila (Oreochromis niloticus) merupakan ikan konsumsi yang masih banyak di gemari oleh masyarakat. Produksi ikan nila saat ini terus dikembangkan guna untuk meningkatkan produksi perikanan budidaya. Ikan nila mempunyai keunggulan antara lain pertumbuhan yang cepat, toleran terhadap lingkungan dan tahan terhadap penyakit. Penelitian ini bertujuan untuk mengetahui pengaruh ekstrak daun jeruju yang diberikan pada pakan untuk meningkatkan pertumbuhan ikan nila. Penelitian ini dilaksanakan di Laboratorium basah Politeknik Kelautan dan Perikanan Pangandaran dengan 4 perlakuan 3 kali ulangan dan menggunakan 20 ekor ikan pada setiap ulangan perlakuan. Perlakuan A 50 ml ekstrak daun jeruju + 1kg pelet ikan, Perlakuan B 100 ml ekstrak daun jeruju + 1kg pelet ikan ,Perlakuan C 150 ml ekstrak daun jeruju + 1kg pelet ikan dan (K) kontrol (tanpa pemberian ekstrak daun jeruju). Parameter yang diamati antara lain SGR (Spesific Growth Rate), pertumbuhan panjang mutlak, dan kelangsungan hidup (SR). Hasil penelitian menunjukan ekstrak daun jeruju memberikan pengaruh terhadap pertumbuhan spesifik (SGR) ikan nila, pertumbuhan panjang mutlak dan SR ikan nila. Laju pertumbuhan spesifik tertinggi terjadi pada perlakuan C yaitu dengan dosis pemberian ekstrak daun jeruju 150 ml pada pelet ikan sebesar 0,16%, diikuti dengan panjang mutlak sebesar 2,42 cm dan Survival Rate 75%. Tilapia (Oreochromis niloticus) is a edible fish that many people still favorite. Tilapia production is currently being developed to increase aquaculture production. Tilapia has advantages such as rapid growth, environmental tolerance and disease resistance. This study aims to determine the effect of jeruju leaf extract given to feed to increase the growth of tilapia. This study was conducted in the wet laboratory of Pangandaran Marine and Fisheries Polytechnic with 4 treatments and 3 replications and with 20 fish in each treatment replication. Treatment A 50 ml jeruju leaf extract +1 kg fish pellets, Treatment B 100 ml jeruju leaf extract +1 kg fish pellets, Treatment C 150 ml jeruju leaf extract +1 kg fish pellets and (K) control (without administering jeruju leaf extract). The parameters observed were SGR (specific growth rate), absolute height growth and survival (SR). The results showed that jeruju leaf extract had an effect on the specific growth (SGR) of tilapia, absolute height growth and SR of tilapia. The highest specific growth rate occurred with treatment C with a 150 ml dose of jeruju leaf extract on fish pellets of 0.16%, followed by an absolute length of 2.42 cm and an Survival Rate of 75%.
Abstract The aim of this study was to evaluate the optimization of Nilasa red tilapia fish Oreochromis niloticus breeding process at Work Unit Freshwater Aquaculture (WUFA) Cangkringan, Technology Development Center of Fisheries (TDCOF) Yogyakarta. Nilasa red tilapia fish is one of the commodity that has advantages, including respond to artificial feed, grow fast, can live with high density and resistance to disease. WUFA Cangkringan was one of the government fisheries center which develop nilasa red tilapia fish. The hatchery activities is including maintenance of the parentstock, spawning, larval rearing, harvesting and post harvest. Nilasa red tilapia fish was a test fish that used at the WUFA Cangkringan from red tilapia study and released under the name Nilasa in 2012, start from 1st generation (F-0) to the 5th generation (F-4) in the program selection. The survival rate resulting from the hatchery activities with seed 2-3 cm was 80% and the seed was sold at Rp50 fish-1. The profit obtained Rp150 699 688 year-1, R/C ratio 1,34 and payback period 9 month. Key word: nilasa red tilapia fish, breeding process, survival rate
Pacific whiteleg shrimp is a cultivated commodity with the prospect of increasing market opportunities yearly. The increase in value is in line with the increasing need for pacific whiteleg shrimp consumption. The impact is an increase in state income in general. Pacific whiteleg shrimp cultivation activities have been carried out on a large and small scale. However, proper enlargement production techniques are needed to increase production. This study aims to determine the technique of pacific whiteleg grow-out so that the information obtained can be disseminated to the public and will add value to the benefits of improving welfare. A study case method with a descriptive analysis approach was used. Pacific whiteleg shrimp culture is divided into the hatchery and grow-out sectors. The grow-out activities include pond cleaning, media preparation, fry stocking, feeding, treatment, pest and disease management, growth sampling, and harvesting. Based on the study's results, the production consisted of three cycles per year with a density of 180 m2 an SR value of 85.5%, and an FCR value of 1.25%.
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